This document provides an overview of stroke, including its definition, pathophysiology, types, causes, signs and symptoms, diagnosis, and treatment. It notes that stroke is the 5th leading cause of death in the US, occurring when blood flow to the brain is interrupted. There are three main types of stroke: ischemic, hemorrhagic, and transient ischemic attack. Risk factors include hypertension, smoking, heart disease, and diabetes. Diagnosis involves assessing symptoms like numbness or weakness based on the FAST criteria and may include imaging tests and bloodwork. Treatment aims to restore blood flow, reduce complications, and involve physical therapy to improve function.